144411 (2004 EW9)

NEO ⇩ IMP ⇩ COV ★ EPH ⇩ OBS ⇩ Radar
Orbital Elements
Epoch (TDB)2025-11-21 (JD 2461000.5)
Eccentricity (e)0.5339217436 ± 4.33e-10
Semi-major axis (a)1.9171752718 AU ± 1.10e-10
Inclination (i)8.79432051° ± 5.76e-07
Long. of Asc. Node (Ω)288.78678844° ± 2.63e-06
Arg. of Perihelion (ω)8.18075153° ± 2.93e-06
Mean Anomaly (M)8.37493834° ± 1.68e-07
Mean Motion (n)0.3712953823°/day ± 3.19e-11
Perihelion dist (q)0.89355371 AU ± 8.31e-10
Aphelion dist (Q)2.94079684 AU ± 8.47e-10
Orbital Period2.65456111 yr ± 2.28e-10
Physical Parameters
H (abs. magnitude)16.54
G (slope)0.15
Orbit Solution
SourceIAA
Solution Date2026-06-01
RMS Residual0.235″
Uncertainty0
Orbit TypeApollo
MOID0.091125 AU
Observations Used2438
Radar Obs Used8
Oppositions12
Arc Total2001-2020
First Observation Used2001-03-14
Last Observation Used2025-03-25
Observations (2564)
Date Type RA Dec Mag Band Observatory
2004-05-21 02:47:36 C 10 35 52.98 -12 52 53.9 r H41
2004-05-21 02:49:50 C 10 35 52.99 -12 52 53.5 r H41
2004-05-21 02:52:17 C 10 35 52.91 -12 52 52.1 r H41
2004-05-21 02:54:29 C 10 35 52.95 -12 52 51.2 r H41
2004-05-21 02:56:34 C 10 35 52.93 -12 52 50.8 r H41
2004-05-23 02:35:21 C 10 35 57.39 -12 32 33.1 r H41
2004-05-23 02:37:30 C 10 35 57.39 -12 32 32.6 r H41
2004-05-23 02:39:22 C 10 35 57.37 -12 32 31.0 r H41
2004-05-23 02:41:08 C 10 35 57.38 -12 32 30.6 r H41
2004-05-23 02:42:53 C 10 35 57.38 -12 32 30.1 r H41
2004-05-27 08:37:00 C 10 36 50.19 -11 51 36.0 r 428
2004-05-27 08:39:44 C 10 36 50.20 -11 51 34.7 r 428
2004-05-27 08:42:12 C 10 36 50.22 -11 51 33.8 r 428
2004-05-27 08:44:45 C 10 36 50.27 -11 51 32.6 r 428
2004-06-04 21:06:52 C 10 41 16.83 -10 40 48.0 r J87
2004-06-04 21:13:12 C 10 41 16.99 -10 40 45.7 r J87
2004-06-04 21:19:32 C 10 41 17.18 -10 40 43.7 r J87
2004-06-11 02:39:13 C 10 46 33.02 -09 55 21.6 r H41
2004-06-11 02:41:28 C 10 46 33.09 -09 55 21.2 r H41
2004-06-11 02:43:35 C 10 46 33.17 -09 55 20.1 r H41
2004-06-11 02:45:42 C 10 46 33.23 -09 55 19.8 r H41
2004-06-11 02:48:20 C 10 46 33.37 -09 55 19.3 r H41
2004-06-15 23:43:03 C 10 51 44.26 -09 21 31.5 c 807
2004-06-15 23:54:02 C 10 51 44.72 -09 21 28.6 c 807
2004-07-18 09:26:28 C 11 42 24.64 -02 58 27.4 r E12
2004-07-18 09:37:21 C 11 42 25.41 -02 58 16.2 r E12
2004-07-18 09:48:08 C 11 42 26.19 -02 58 05.1 r E12
2004-07-18 09:58:58 C 11 42 26.98 -02 57 53.7 r E12
2004-07-19 11:08:33 C 11 44 23.46 -02 31 01.1 c 322
2004-07-19 12:00:24 C 11 44 27.21 -02 30 03.5 c 322
2004-07-19 12:07:04 C 11 44 27.72 -02 29 55.6 c 322
2004-07-27 11:22:00 C 11 59 31.16 +02 06 33.0 c 322
2004-07-27 11:29:03 C 11 59 31.71 +02 06 46.3 c 322
2004-08-07 02:59:00 C 12 20 56.03 +13 32 42.2 r 762
2004-08-07 03:01:41 C 12 20 56.37 +13 32 51.6 r 762
2004-08-07 03:03:40 C 12 20 56.54 +13 32 58.7 r 762
2004-08-26 19:17:37 C 13 42 23.62 +62 55 56.7 c 434
2004-08-26 19:19:07 C 13 42 24.33 +62 56 07.0 c 434
2004-08-26 19:21:17 C 13 42 25.12 +62 56 24.6 c 434
2004-08-26 19:22:53 C 13 42 25.89 +62 56 35.7 c 434
2004-08-27 20:08:50 C 13 54 42.51 +66 01 28.5 o 240
2004-08-27 20:09:53 C 13 54 43.02 +66 01 36.2 o 240
2004-08-27 20:10:57 C 13 54 43.59 +66 01 44.0 o 240
2004-08-27 20:12:00 C 13 54 44.20 +66 01 51.6 o 240
2004-08-27 20:12:32 C 13 54 44.47 +66 01 55.4 o 240
2004-08-27 20:13:04 C 13 54 44.77 +66 01 59.3 o 240
2004-08-27 20:14:08 C 13 54 45.33 +66 02 06.7 o 240
2004-08-27 20:15:12 C 13 54 45.93 +66 02 14.2 o 240
2004-08-27 20:16:16 C 13 54 46.46 +66 02 21.8 o 240
2004-08-27 20:16:47 C 13 54 46.78 +66 02 25.6 o 240
Radar Observations (8)
Epoch (UTC)ValueSigmaUnitsFreq (MHz)ReceiverTransmitter
2012-07-11 16:45:00 57252.5688 0.04 Hz 2380 -1 -1
2012-07-12 18:51:00 123271564.2 0.5 us 2380 -1 -1
2012-07-15 17:30:00 120183628 3 us 8560 -14 -14
2012-07-20 16:20:00 122765707.19 1 us 2380 -1 -1
2020-06-21 14:38:00 121746239 5 us 2380 -1 -1
2020-06-23 14:44:00 131938814.32 5 us 2380 -1 -1
2020-06-24 14:47:00 137365693.2 5 us 2380 -1 -1
2020-06-27 14:26:00 154599961.39 1 us 2380 -1 -1
Station codes
-14 DSS-14 Goldstone (70-m) -1 Arecibo (305-m, 1963–2020)